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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Diana Lowry Koslowske, O.D.

Optometrist in Grand Rapids, MI · enumerated 2005 · practices at Michigan Optical LLC.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1053306274

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Registry record

Entity type Individual (Type 1)
Name Dr. Diana Lowry Koslowske
Credential O.D.
Sex Female
Practice address 511 Wilson Ave Nw, Suite G, Grand Rapids, MI, 49534
Phone (616) 301-8663
Fax (616) 301-2987
Enumeration date Sep 14, 2005
Last updated in NPPES May 20, 2008

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 4901003577 (MI) Primary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD credential

Other identifiers

Identifier Type State Issuer
203516664 Other MI TAX ID
900D115230 Other MI BCBS OF MICHIGAN

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Diana Koslowske's NPI record?
Cross-check NPI 1053306274 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1053306274 active?
Yes, as of the latest NPPES snapshot, NPI 1053306274 is active (record last updated 2008-05-20).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-20.